Diameter: 43mm - Crystal: Hardened mineral crystal (550-650 Vickers) - Water Resistance: 10 ATM water resistance tested - Visibility: Constant glow in low light or darkness for up to 25 years - Movement: Ronda 515 - Case Material: Stainless steel case - Case Back: Stainless steel case back - Crown: Protected stainless steel crown with logo - Strap: 23mm PU strap - Dial/Figures: Black/Black - 4 LLT on dial/2 LLT on H/M hands - Green and Orange Luminox Light Technology (LLT): see specification tab - Swiss made